phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('2e4fa09d71812d87ec9ba6e1d8c1f389', -1, 1519567086, 1519567086, '36e2fd22', 1, 0, 0)

Line : 211
File : sessions.php